Site Specialties

Investigator Support Services (ISS) provides access to 250 clinical trial sites conducting phase I-IV research in North America. Our experienced investigators are able to enroll in any indication through their large patient databases, physician referral relationships, and patient outreach expertise. The list below indicates the number of research sites experienced in each therapeutic area.

Addiction Medicine: 36
Allergy & Immunology: 84
Anesthesiology: 19
Cardiovascular Disease: 104
Child & Adolescent Psychiatry: 20
Clinical Neurophysiology: 23
Colon & Rectal Surgery: 16
Critical Care Medicine: 24
Dental: 13
Dermatology: 83
Electrodiagnostic Medicine: 13
Emergency Medicine: 19
Endocrinology: 98
Family Practice: 119
Gastroenterology: 84
Geriatric Medicine: 72
Gynecologic Oncology: 12
Hand Surgery: 9
Hematology: 26
Infectious Disease: 61
Internal Medicine: 127
Interventional Cardiology: 22
Neonatal–Perinatal Medicine: 5
Nephrology: 39
Neurology: 77
Neuro-Rehabilitation: 9
Obstetrics & Gynecology: 63
Oncology: 14
Ophthalmology: 44
Orthopedics: 32
Otolaryngology: 34
Pain Medicine: 97
Pediatrics: 38
Physical Medicine & Rehabilitation: 30
Plastic Surgery: 17
Podiatry: 33
Preventive Medicine: 65
Psychiatry: 62
Pulmonary Diseases: 97
Radiology: 15
Reproductive Endocrinology: 15
Rheumatology: 70
Sleep Medicine: 68
Sports Medicine: 32
Surgery: 21
Thoracic Surgery: 8
Urology: 57
Vascular & Interventional Radiology: 10
Vascular Surgery: 13
Wound Care Center: 2